Features of Operation of Control and Measuring Equipment in Water with Higher Carbonate Hardness

Summary

Reasons for the failure of control and measuring equipment determining the free residual chlorine in a swimming pool’s water are considered. In process of the equipment operation deposits on a measuring electrode of a running-water cell and corrosion of a counter electrode are observed. The inspection of the swimming pool’s water treatment system, chemical analysis of deposits on the measuring electrode and analysis of the pool’s water allow to suppose that this water composition favors the calcium carbonate deposition on the surfaces of pipelines and equipment. The assessment of water stability shows that the index of saturation with calcium carbonate is sufficiently high. Results of the experimental study of stabilizing treatment of water for the purpose of reducing the index of saturation with calcium carbonate are presented. Dozes of reagents selected optimally favor the normal operation of equipment.

Key words

water treatment , swimming pool , free chlorine measuring system , stability index , carbonate deposits